Hawkes
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Post by Hawkes on Dec 29, 2011 16:12:11 GMT -4
Something isn't adding up here, I can tell by the wire size that the old wire is no bigger than #10, good for 30 A. Is there a wattage rating on the unit? I see a 30 on the label, what's that pertain to? Above the 55A is 1 phase, which has two meanings, could be 120V or 240 V, both are single (1) phase. It would not be common to rate something that size for 120V, but it is possible. If that's the case and it is 30 a per side you could use #8 wire.
There's a couple labels up on top, what do they say?
Nice neat shop you have there.
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Post by mostheman on Dec 29, 2011 16:29:03 GMT -4
The 30 Belongs to the Horsepower rating on the motor (1/30)
The heater is 240 V Single Phase and the motor is 240 V single Phase
The wattage rating is 5Kw on the heater.
As for the existing wire, it is smaller than 6 guage but I'm going to replace it anyways.
The 2 stickers on the top: One Says use wire rated to 90 degrees C and the other says keep minimum 4" fomr flammable surfaces.
When I moved into this shop I vowed to keep it clean....its a work in progress
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Hawkes
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Post by Hawkes on Dec 29, 2011 16:51:11 GMT -4
The 30 Belongs to the Horsepower rating on the motor (1/30) The heater is 240 V Single Phase and the motor is 240 V single Phase The wattage rating is 5Kw on the heater. As for the existing wire, it is smaller than 6 guage but I'm going to replace it anyways. The 2 stickers on the top: One Says use wire rated to 90 degrees C and the other says keep minimum 4" fomr flammable surfaces. When I moved into this shop I vowed to keep it clean....its a work in progress 5K watts requires less than 30 amps, so you could easily go with #10 wire for a very short distance. The FLC 55A must mean total amps, 27.5 per side. The motor draw is almost negligible. If you already have the #6 wire go with it, if not #8 would more than meet code, keeping below 80% of nameplate rating. You may have trouble fitting and bending #6 into the space provided. There must be a removable plate to get at the wire connections, there might be a diagram for the thermostat on that plate.
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Post by mostheman on Dec 29, 2011 16:53:17 GMT -4
Ok, cool, I was getting quotes of 2.99 per foot for the wire, I need about 65 feet to do it right.
What can you get for wire that has a 90 degree C rating on it?
What do I ask for a T stat and contactor? There is a T stat on the side at present. Or do you need a look inside first?
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Hawkes
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Post by Hawkes on Dec 29, 2011 17:08:55 GMT -4
Ok, cool, I was getting quotes of 2.99 per foot for the wire, I need about 65 feet to do it right. What can you get for wire that has a 90 degree C rating on it? What do I ask for a T stat and contactor? There is a T stat on the side at present. Or do you need a look inside first? I edited the above post in case you didn't notice. If there's a Tstat on the side it should already be wired internally? Just the regular white loomex or romex, should be NMD-90. -non metallic sheathed 90° C. Wire color has been changing, #10 is orange now, not sure if #8 has, was white the last time I bought it. There is also for wet location or direct burial that is black, you don't need that.
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Post by mostheman on Dec 29, 2011 17:15:23 GMT -4
Yeah there is a T sat on the side but I wanted to mount one on the wall mid garage as I cant reach the one up there. Plus I want to use it as an on/off switch as I'm not sure if I'll leave it on all the time or just use the heater intermittantly when I'm out there.
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Hawkes
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Post by Hawkes on Dec 29, 2011 18:20:44 GMT -4
Yeah there is a T sat on the side but I wanted to mount one on the wall mid garage as I cant reach the one up there. Plus I want to use it as an on/off switch as I'm not sure if I'll leave it on all the time or just use the heater intermittantly when I'm out there. It's going to depend on what the thermostat that is there is using for a relay. If it is line voltage (240v) it's not really usable, you can't reasonably get a thermostat that is rated at 30 amps. What you will need is a 24V/240V rated at 5k relay wired into a box. The relay mounts on the electrical panel or in a box near it, gets fed with your new #6 or 8 wire and has a wire with 2 conductors (18 guage) going to a low voltage thermostat. Any furnace type thermostat will work.
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Hawkes
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Post by Hawkes on Dec 29, 2011 18:35:58 GMT -4
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