Tanning Bed Keeps Tripping the Breaker? Here Is What It Usually Is

A bed that trips the breaker is a bed you cannot sell time on, and every walk to the panel is a client waiting in a robe. The breaker is not the problem. It is a messenger. Something on that circuit is pulling more current than the breaker will allow, and the pattern of the trips tells you where to look. Here is how we read it.

First, read the pattern

Before you touch anything, note when the trip happens. There are three patterns and they mean different things.

• Trips the instant the lamps strike. That is a magnetic trip, which only happens on a sudden, very high current. It usually means a short somewhere in the bed.
• Trips after five to twenty minutes. That is a thermal trip. The circuit is carrying more current than its rating and the breaker heats until it lets go. This is the most common pattern, and it is usually a loading problem.
• Trips only sometimes. Hot afternoons, a second bed running, the dryer or the HVAC kicking on. That points to a shared circuit or a breaker on its last legs.

1. Find out what else is on the circuit

Cheapest check, and right most often. Turn the breaker off and walk the salon. Anything that went dead is sharing the circuit with your bed: a fan, a second bed, a mini fridge, a space heater in winter. A tanning bed needs the whole circuit to itself. If anything else is on it, the fix is a dedicated circuit, not a bed repair. Our guide to tanning bed electrical requirements covers what that circuit should look like.

2. Check that the circuit was sized for the bed

Beds get moved. A bed that ran fine on a 30 amp circuit at the old location gets plugged into a 20 amp circuit at the new one and trips every afternoon. Compare the amperage and voltage on the bed's data plate to the breaker handle. If the breaker is smaller than the bed's rating, or a 220 volt bed is running on an adapter, you have found it. Do not solve this with a bigger breaker. The breaker protects the wire in the wall, and a bigger breaker on the same wire is how fires start. The fix is an electrician and a new circuit.

3. Trips after warm-up on a dedicated circuit means ballast or breaker

If the bed has its own correctly sized circuit and it still trips after it has been running a while, you are down to two suspects.

• A ballast that draws more as it heats. Magnetic ballast windings break down with age. The ballast works cold, pulls more as it warms, and the breaker trips. One running much hotter than its neighbors, or with a burnt smell or discolored case, is the one to test. See our ballast parts page.
• A tired breaker. Breakers wear out. One that has tripped dozens of times, or is twenty years old, can start tripping below its rating. If the bed's draw is within spec and the breaker still goes, the breaker is the part. An electrician swaps it in minutes.

A clamp meter on the feed settles this fast. If the bed is drawing what the plate says, replace the breaker. If it is drawing more, it is in the bed.

4. Instant trips point to a short

When the breaker snaps the moment the session starts, current is going where it should not. The usual causes are a shorted ballast, a wire rubbed through against the frame, a failed capacitor, or a lamp holder that has arced and carbon tracked. On older beds a starter can fail shorted too. None of these get better with resets. Each one puts another surge through a fault that is already there.

5. Loose neutral and moisture

Two causes that fool people. A loose neutral at the outlet, plug or panel makes voltage wander and heats the connection. Lamps that brighten and dim before a trip, or a plug that is warm or discolored, are the signs. That is an electrician job and it should not wait. Moisture is the other. A bed near a shower room, a leak above the ballast compartment, or steam cleaning around the bed puts water where the high voltage lives. Trips on humid mornings that clear by afternoon are the tell.

Electrician or bed tech

The dividing line we use: if the breaker trips with the bed unplugged, if anything else shares the circuit, if the breaker is undersized, or if a plug or outlet is warm or discolored, call an electrician first. If the bed is on its own properly sized circuit with a healthy breaker and still trips, the problem is inside the bed, and that is us. On the call we ask about the trip pattern, the breaker size and what else is on the circuit, and we can usually tell you which trade you need before anyone drives out. If it is us, we come with a meter and the common electrical parts on the truck.

Safety

Power off and unplug the bed before you open any panel. Ballast compartments carry high voltage, and the capacitors in magnetic ballast beds can hold a charge after the power is off. Never bypass a safety switch, a thermal cutoff or a fuse to keep a bed running, and never replace a breaker with a larger one. A hot, melted or discolored plug, cord or outlet comes out of service until an electrician has seen it.

Related guides

• Tanning bed electrical requirements: do you need a 220V circuit?
• Tanning bed fuse keeps blowing: where to look before you replace it again
• Tanning bed won't turn on: the salon owner's checklist
• Tanning bed parts we stock