What Size Service To Run 7.5 Hp Electric Motor

• #1

I have the typical 200 amp house electric service. Is it too much to ask of it to start and run a 7.five HP Clausing Lathe? I can run a Miller 250HF Tig welder that is supposed to pull 60 amps, must be truthful as a twoscore amp breaker lasts almost 2 nano seconds before tripping. What Say You lot all? Appropriate? Change motor? VFD?

• #3

On 240v that is a 30A circuit assuming short conductors. If you have to run it several feet you volition take to figure in voltage drop.

• #5

Dude, I run my whole welding shop on a 200 amp service. I run 2-30 hp rotary stage converters which run my xxx hp 3 phase press brake, 7.5 hp lathe, 7.v hp air compressor, Miller invision 50 amp welder + 5 other smaller welders, ring saws, Sanders, Bridgeport, etc... I have never tripped a breaker.

In that location are only 3 people working in the shop at one fourth dimension.

• #6

What voltage options does the motor have? If it comes down to you not being abel to run it at full power, you could wire upwards only one-half the coils. Say it's a 240-480 volt motor, information technology accomplishes both configuration by having two sets of coils that either run parallel or in series. Run just half the coils at 240V.

• #7

It will piece of work only fine. I have a 200 amp master with ii 100 amp sub panels and operate a 10HP 220 volt single stage Dayton subcontract duty motor on my air compressor all the time. Full load amps is only 40A.

• #8

Thanks all, sounds like it'due south a go.

• #9

Currently running a SHARP SV2414SE-F 10HP VMC, 3HP Genu Manufacturing plant and Air Compressor with a 25HP RPC with a voltage stabilizer off of a 200AMP Service using a 100AMP Breaker as per the Stage-O-Matic Tech

Works well just I take not really asked my VMC to fully load my spindle to 10hp. Correct now I only cutting aluminum.

Vince

• #x

My main compressor is 7.5HP (real American horsies/Kellogg-American 2 stage compressor). If my wife is using the pressure pot sandblaster, or if I am using the blast chiffonier, sometimes the 5HP IR T30 compressor is also boot on and off at the same time the 7.5 is running.

You won't take a trouble starting a lathe if the wiring and breakers are up to snuff.

smt

• #11

My information shows you lot will need about 35 amp service at 240 volts to run that motor. No, 20 amp service will not be enough.
What makes you think a 60 amp welder can be run by a 40 amp service. If that is a stick welder I believe code allows you lot to supply information technology with a excursion sized one breaker down from the input amps. So it should exist okay on a fifty amp service?
If it is non a stick welder you lot need the full 60 amps or more. I ran my 50 amp buzzbox from a 30 amp dryer plug for a year or so but at most half of full output with smaller rods.
Bill D.

• #12

I have the typical 200 amp business firm electrical service. Is information technology as well much to inquire of it to showtime and run a 7.5 HP Clausing Lathe? I can run a Miller 250HF Tig welder that is supposed to pull 60 amps, must be true as a 40 amp breaker lasts about 2 nano seconds earlier tripping. What Say You all? Advisable? Change motor? VFD?

.
look at amperage rating on motor and figure startup electric current is 4 times more. for example if says 25 amp the electrical system including wires needs to bargain with 100 amp surge for ii to 6 seconds. motor overloads are usually time delayed and accept 4x more current for less than six seconds
...... if wires are too small when the startup surge happens the voltage drops with small wires and a motor tin have even longer to become up to speed.

• #xiii

I accidentally plugged My Tig welder into a 40 Amp receptical, that'southward how I plant out information technology actually does need threescore amps.It popped the breaker virtually as fast every bit I hit the start switch.

• #14

I run a 25hp stage converter, 10 hp VMC and a v hp lathe at one time at home

• #15

I used a vii.five hp single phase motor to run our sawmill. When we started information technology, the neighbor next door complained that it turned off his Television receiver. Bob

• #16

I used a 7.5 hp single phase motor to run our sawmill. When we started it, the neighbor next door complained that information technology turned off his TV ready. Bob

Sounds as if he is stealing power from you. Check your outside lines lately.

• #17

In that location might be a problem if your on the REA (rural electrical)

Around here, they mandate you will non start any motor over v hp.

• #18

When I built my shop, it needed a new electrical service. (The house is powered through a opposite-fed 60A billow, very cheesy 1960s IMO.) The utility gave me a questionaire to make full in and I wrote that I wanted to beginning 15HP motors. The utility project engineer said that would chocolate-brown-out the entire cul-de-sac (which is pretty much what I assumed) and so I ended up with a defended transformer for my new service.

• #19

House is 130 amp principal and shop is sub from that.

The 7.five hp baldor powered champion starts just fine.

Lights may flicker in the firm if house ac is on merely otherwise practiced.

• #20

Any advice on Asian VFD's? Tiptoeing quietly out.

What Size Service To Run 7.5 Hp Electric Motor,

Source: https://www.practicalmachinist.com/vb/transformers-phase-converters-and-vfd/7-5-hp-single-phase-motor-typical-house-electric-service-question-303554/

Posted by: warrengrep1973.blogspot.com

Share this post