my brothers band is getting ready to play at a bar and they only have 220v receptacles available. i was thinking of running a 220v plug to a seperate breaker box to 2 20amp breakers and having, 2 110v circuits from this, i need suggetions, ANSWERS, and will this idea work
2006-10-02 16:47:11 · 7 answers · asked by Anonymous in Home & Garden ➔ Do It Yourself (DIY)
If your 220V receptacle is 4 wire (2 hot, neutral, and ground), it seems like it would work and I can't think of a code violation. If it is a 3 wire receptacle, you have no ground (or worse, no neutral) and then it would definitely be against code.
2006-10-03 03:11:41 · answer #1 · answered by An electrical engineer 5 · 0⤊ 0⤋
yes it will. your 2 lines or load go 1 to each breaker, common or neutral goes to grounding lug in the breaker box and seperate ground wires for the 2 circuits must be used. also, use the little green wire. make sure that there is a true ground in 1 or both of the boxs and the ground on the second box is the white wire on the 110 plugs. the black from the breakers will go to the black in on the outlets. youll also either have lugs for the breakers, as in a smaller 220 box. 1 load goes high the other goes below, make sure your breaker go to 1 lug each, or to hell with it, get the 200 mile an hr tape(duct tape) and only use 1 load wire from the 220 and the neutral and good to go, just keep resetting.
2006-10-02 19:08:45 · answer #2 · answered by l8ntpianist 3 · 0⤊ 0⤋
25 hp = 25 x 0.746 kW = 18.65 kW. (This is the output power of motor). 3 phase balanced power kWatts (as drawn from supply) = 18.65 / % efficiency Assume 92% then power drawn = 18.65 / 0.92 = 20.72 kW 20.72 kW = SqRt3 x VL x IL x Pf. / 1000. IL = 20,720 / 1.732 x 220 x Pf. If you take a power factor of 0.8 then :- IL = 68 amp. Depending on the type of cable, installation method and length of cable run, a 25 mm2 PVC unarmoured cable, or a 16 mm2 PVC armoured, or XLP insulated armoured cable would suffice. however as a quick reference, a 3 phase 220v, 50 Bhp motor at full load will take 124 amps, so as a rough guess 25 will be 62 amps. In the UK, depending on the installation method, would be about 16 mm2, (but does depend on how the cables are installed). EDIT. Sorry about the input/output power, which I have amended, but at most you would need 25mm2 cable. The starting current is only momentary and not constant current. However as stated it depends on type, installation method and length of run. The supply circuit breaker will protect against short circuit. The cable does not have to accomodate the current rating of the supply breaker. With a 25 hp motor you will need a starter with overload protection, ie a 30 kW contactor with thermal overload to suit 68 amp, if direct on line starting. If Star Delta starting the ratings can be reduced, but thats something else.
2016-03-27 02:54:45 · answer #3 · answered by Anonymous · 0⤊ 0⤋
That will work, but you will need to run a ground or neutral line back to the orginal breaker panel.
2006-10-03 10:31:06 · answer #4 · answered by richard Alvarado 4 · 0⤊ 0⤋
yes it will work as long as you cut your volts by half by grounding inside the other breaker box hope this helps
2006-10-02 16:55:36 · answer #5 · answered by peavylawnmowerparts 1 · 0⤊ 0⤋
look on line for a local store that sells transformers, buy a 220 volt that drops to 110. problem solved
2006-10-02 16:56:45 · answer #6 · answered by T C 6 · 0⤊ 1⤋
Need more info, are you in the USA?
2006-10-02 16:55:07 · answer #7 · answered by charley128 5 · 0⤊ 0⤋