The E303BD is suitable for use outdoors, but the plug and socket are not suitable for permanent or temporary immersion in water, or for use in damp locations such as in direct contact with wet grass. All electrical equipment used outdoors must only be connected to the electricity supply through a Residual Current Device (RCD) rated at 30mA or less. The maximum total load connected to the E303BD may not exceed 16 Amps, or 3680 Watts. The E303BD may only be used on 230V supplies. 110 Volt equipment must be connected with plugs and sockets that are colour-coded yellow. The E303BD should be checked annually for electrical safety by a qualified electrician. Gregory Audio Visual offers this certified service from as little as £2.00 per test..