I have a Coates12411st spa heat it says to wire it single phase 240 vac 11kw it has 3 red wires and a single blue and a yellow ground to the box my line in has a red hot a black hot a green ground and a white neutral how would i wire it up properly someone told me to run the 3 red to my red hot and the blue to my black hot and ground the green to the yellow wire on the box does anyone know if that is correct
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My limited research indicates this heater is designed for USA electrical systems. That would mean single phase, 240/208 volts, 60 Hz. The drawings I reviewed shows a 2 pole, 240 volt breaker feeding each heating circuit. That means no "neutral wire" goes to the heater and therefore no 120 volts is needed. This is good. Kenya's system is single phase, 240 volts, 50 Hz. The heater should work reasonably well on the African system. Connect the power just like you would in the US.
First of all I would assume you don't have three phase. Three phase is defined as 208v, 120/240, 240/480 or straight 480v and is used commercially.
Most likely you have a single phase service coming into your house unless you have an elevator or something that would require 3 phase.
A single phase service consist of 2 - 120v legs = 240v and one neutral, if you put a meter across both 120v legs you'll get around 240v and if you place your meter across one leg and your neutral you'll get 120v (not exact but in the range of 124v) Your range will have usually three connectors, red, black and white. So if you run #6 3c with ground, you will have red, black, white and green (its either green or bare). Connect the colors accordingly. You could even have a range that would work off what they call range cable it's legal in most states, which consist of 2 black wires incased in a bare neutral strand and wraped in usually gray insulation, electrical codes vary state to state county to county. The range should have a manual that would tell you what the rating of the electric stove is, such as 40 or 50 amps. 40amp is commonly #8 wire and 50amp is usually #6. I recommend site unseen in using the #6 wire.
No. You have to find out if you have 3 phase or single phase power. If this is a new unit you will find a wiring diagram inside the front cover. 3 phase power has 3 "hot" wires. Single phase has 2 "hot" wires. There is a big difference when you hook it up wrong. I don't know if this is a new installation or if you are replacing an old one. The terminals are numbered for 3 phase. If you look in your breaker box, 3 phase 208 will haven a breaker with 3 spaces hooked together by one bar. Single phase will have two spaces hooked together by a bar. So if the breaker kicks out it will flip all 3 space on 3 phase or 2 spaces on single phase. If you already have wires to the location of the booster heater, you may have to use single phase if that is all that is at that location. If you have single phase power you will have to look at the wiring diagram and you will see the terminal block represented for both single and 3 phase. Normally running from the terminal block will be six wires marked 1 through 6. The wireing diagram will say something like "for single phase put 1,3,5 on terminal 1 and 2,4,6 on terminal 3. Leave terminal 2 out all together. Of course at this point your 2 hot wires will go to terminal 1 and 3. There are other considerations as well. With 3 phase the circuit wires will be smaller gauge and may not carry the current you need for single phase. This is a booster heater. You need to hook up your hot water line to go into the heater and the boosted hot water to your appliance. It will not work to heat your water for other purposes. It is meant to take 140 degree water and boost it to 190 degrees. Good luck, hope this helps
something is wrong with the voltage it should be 240 when you test the heater terminals, i think the heater relay isnt making a good contact. but i would check for 240 at the main panel and chase the wiring to find the voltage drop.
There should be a large, easy to read diagram under the cover once you remove it from the heater. Is the one under your missing or unreadable? Hayward doesn't publish one on their tech website or residential documents page so I have an email into our tech support contact asking for one in case yours is missing. If you find it under the cover please add a comment to that effect. FIXYA website has not been letting me post pictures lately so getting you the info may be a little difficult.
First, is this a 120 VAC or 240 VAC heater? 120 VAC heater will usually have one Black & one White wire and 240 VAC heater will usually have two Black wires or one Black & one Red wire. If it is a 120 VAC heater then you need to supply the white wire at the heater with a neutral (white) wire from the breaker panel. If it is a 240 VAC heater then you need to verify that you have 240 VAC at the heater from Black lead to Red lead. If you are not sure about how to do this please have an experienced electrician look at it so you don't get electrocuted and/or burn up your new heater. Hope this helps!